2.4 ghz signal is not detected by any device.
I have a Cox dual-band router (brand new), but only the 5 ghz (5G) signal is detectable. None of my devices detects the 2.4 ghz spectrum signal -- it does not show up in the list of available networks. I have two devices (a laptop and a Roku) that are not 5G compatible, so I need to use the 2.4 ghz signal with those. On the router, the lights flash for both. Rebooted both the router and the Roku multiple times, but that did not solve the problem. The representative on the Cox website "Chat" had no other ideas.